Ski-fastening device



Dec. 8, 1953 A. ATTENHOFER SKI-FASTENING DEVICE Filed May 25, 1952 amuuuuuuun Patented Dec. 8, 1953 UNITED STATES PATENT OFFICE 2,661,957 SKI-FASTENINQDEYICE Adolf Attenhofer, Zurich, Switzerland Application May 23, 1952, Serial No. 289,573

" 3Claims. ((1280-1135) The invention relates to a ski-fastening device having a cable loop detachably hooked to It is another object of the invention to provide a ski-fastening device offeringan increased downward pull which complies with all requirements.

It is yet another object of the invention to provide a ski equipped with a ski-fastening device offering the advantages mentioned hereinabove.

With these and other objects .in view I provide a ski-fastening device comprising in combination: a longitudinal guide member adapted to be fixed to the'top surface of the ski, a slideshiftably guided on the said guide'member, a toggle lever pivoted to the said slide about a transverse axis, a cable loop attached to the said toggle lever, and at least one spring connected between the said guide member and the said toggle lever.

Preferably an adjustment screw is arranged which controls the stressing of the said spring. In a preferred embodiment, an adjustment nut is journalled rotatably and restrained axially in the said guide member, a threaded bolt is screwed into the said nut, and a coiled tension spring is provided having a helical pitch and an inner diameter matching the helical pitch and outer diameter of the said threaded bolt and in screw connection therewith at one end, the other end of the said spring" being attached to the said toggle lever. I

-In order to attain a particularly desirable spring characteristic, one may provide a bolt having a threaded large diameter portion at one end in screwed connection with the said nut, and a threaded small diameter portion at the other end, and two concentrical coiled tension springs each having a helical pitch and inner diameter matching the helical pitch and outer diameter of the said threaded large diameter portion and threaded small diameter portion, respectively, and in screwed connection with these portions at one end, respectively, the other ends of the said springs being attached to the said toggle lever.

Between the said toggle lever and the said cable loop there may be interposed an attachment member which is articulated to the said toggle lever and which, with upturned projections, embraces the ends of said cable loop behind ferrules fixedly attached to the said ends.

A safety member may be attached detachably to the said attachment member and may, with upturned lugs, engage between the said upturned projections of the attachment member and the said ferrules at the ends of the said cable loop. In the preferred form, the said attachment member has a plate portion, at the rear corners of which the said upturned projections are arranged, and the said safety plate is attached to the said plate portion, the lugs of the said safety plate having slots open towards the said attachment plate,

Further objects and features of the invention will become apparent from the description of a preferred embodiment given by way of example with reference to the accompanying drawing. And while I describe and illustrate what may be considered as typical for the invention, I-wish it to be understood that I do not limit myself to the particular details and dimensions illustrated and described, for obvious modifications will ocour to a person skilled in the art according to the conditions and circumstances in which my said invention is to be applied. In the accompanying drawings: Fig. lis a lateral elevation of a fastening mounted 'on to a skim the operative position, Fig. 2 is a longitudinal section through the tog le'lever device on a larger scale, and Figs. 3 and 4 are sections along the lines III III and IV-IV of Fig 2, respectively.

The ski fastening shown comprises a cable loop I. The free ends of the cable are provided with pressed-on ferrules 2 which can be hooked into an attachment member 3. The attachment member has for this purpose lugs 4 embracing the' cable. The attachment member 3 is linked by means of arms 5 and of rivets 6 to a toggle lever 1 which in turn is pivoted about a pin 8. As will be seen in Figs. 2, 3, the bolt 8 is attached to a slide 9 which is shiftably guided on a guide member ll fixed to the top face of the ski Ill. The abutment of the slide 9 on the guide member H is effected by means of two concentrically telescoped springs I2, I3 which on the one hand are anchored on the pin 8 and, on the other hand are coiled about a threaded spindle M.

This threaded spindle carries at its end a knurled nut l5 which abuts on the stop 16 turned up vertically from the guide member I I. The nut l5 of the threaded spindle M can be 3 turned, but the said nut is restrained against shifting by the stop [6. By turning the nut l accordingly the prestressing of the spring I2 coiled about the spindle l4, and thereby the effective length of the cable I can be adjusted. The pre-stressing of the spring [3 which has a smaller diameter, is varied at the same time thereby that this spring engages with a hook,- shaped hii h me t a d on t e ot er h nd s coiled aboi it abortion fl 'of thefspindle Ikw-hich has a smaller diameter.

The attachment member is moreover so con;

structed that, although the cable loop, be

cured to the fastening. As mentionedyhereip above, lugs 4 of the attachment ,m emb er 3 ernbrace the ends of the cable behind the pressed on ferrules 2. The free ends of the nate, however, at a distance from the rear portiqh w it e at achm nt memb r. thatihs. ca, nds canbe inserted and talgen ou t with; ut difiic ityn d r o; se re, h samje a ety, ate is. i pres ded. when i eehre'd. t9. the. attac ment. em r b lew i a. s re 2,0; Thislsafety platejllii engages behindthe iier t tle '2. with itslues. '1. w ch h ss. have, sl ts, 21a, the width of which exceeds. but little, the, e thefste a le After he dea 2.0; e n osehe 'aiid he a y late. 9. has been removed the. exchanging of the cablelo op is readily possible.

Insteadof th' knurled nut {5 being passed through the stop. 18,. which latter embraces the, nut as how n e 2,, t s. o s r l t guide the nut with a neck-shaped recessin a mortisejoint. which is, open on top, and to 'rest Y the same from axial displacement,

M O o s nf hm c w the o e. level: device as descr'bed, meanscan be, proyided for seciiring' or effecting a'diagonal pull.

The. mbod me -v ho n i t e r w n a ng tWq, springs; l2; and [-3 haspr'ovedparticularly sseeessiul- (ha uzhimesmr n en ion a d; e re t sec re hrhe ier Bateat V A, kias n n dsv qe c m r s ng. hm: bination: a longitudinal guide e radapter to be fixed to the toe urfaced he l i, a sli u de h; th s id. u d m r, a he. cl ve iteted, o t e. ai Slide abqhit in eizhe ax s a cabl .10 1; t a ed vto e e toggle las r ah. d' stme hut. i rnalle hrtatably. 8J i. @i- QQ a l y in h a dv em m r a be hayin a h deda ige ian e te portion; at one endin screwed'connection w, th the said .nutiand athre'aded small-dia'mete; on at the other end, and twov concentrical fteh i m. springs e ay ng a heli al, pitqh ar d. m r m tc i g he he ica pitch and outer diameter of the said threadedlarge diameter portion and threaded small diameter portion, respectively, and in screwed connection with these portions at one end, respectively, the other ends of the said spring being attached to the said toggle lever.

2. A ski-fastening device comprising in com bination: a longitudinal guide member adapted to be fixed to the top surface of the ski, a slide shittably gnided: on the said guide member, a toggle leveri pivoted to the said slide. about a transverse axis, at least one spring connected between the said guide member and the said tp g gle la fili, an attachment member articulated to the said' toggle lever, a cable loop, ferrules attached to the ends of the said cable 7 loop, and a saietyplate detachably attached to the saidattachment member, the said attachment upturned projections embracing the ends of the said cable and engaging behind the aid iermles, nd h sa d af typ ate e agin with uptur edlAsshet BeQ- hQ an erru es an sa d moiehi ens .1 he a d a hmen at 3. A ski-fastening device comprising in corn Q m ionz a pnsihedinal u d mem er a a te to ed o the the u ace, of he ski a li e ii' i a i uid d: n. he said uide em e a whale leve piv ed. t he said. lide bqht a! transverse axis, at leastone spring connected be weeh th sa d gui e m m e an the sa toggle lever hetta lhme i,memb articulht'ed q he Bald g l ever a cab e ea erru es e ilx attached to the ends of the said cable loop, the

ai e a hm nt m mb av ng Pl te. rt h d tw ht hed roi oh et e e r or:

is Qf' he s dir ehhrtioh e b ac ng the. a d.

cable ends and engaging behind the said ferrules, and a safety plate detachablyattached; to mea Port n. o zth s a ta m n embe ehdev hs lhtie s nga -between the hemm d r ec s, e awedment member and the said ferrules, thesaid lugs hav ns,, h h lht hh h hwar s the aidi ate QlQIfiQQQ APO F T'IENH FER- 7 References (tited inthe fileof this patent; 1 5 11151 STATES. ATENTS.-

D t ifildflfil. Kreiele Aue- 18119. 1 .;3, 3; isenheer a hu e It 5 gages 17; den e. f-.-, V-,-.-. .---i Au 27:, 1514.6: I FQH tGN PA EN dumb r; oun ry Da e 5 mar--+-a-,.-s-.-.-. rlfi 9 9. .,2A Sw zerl nd ha a- 1, wa 239,164 Switzerland n 17,13,45, 2%?590 S itzer nd a ew. 1, 19 4 4 79 F ance ;-.s-. -,-i Ma 19 3 

